/Engine/Source/Runtime/SlateCore/Public/Debugging/SlateDebugging.h
Called after a widget finishes painting.
typedef TMulticastDelegate_ThreeParams< void, const [SWidget](API\Runtime\SlateCore\Widgets\SWidget) *, const [FSlateWindowElementList](API\Runtime\SlateCore\Rendering\FSlateWindowElementList) &, int32 > FEndWidgetPaint